My son's I-485 was recently approved, and we will receive his Green Card in a few days. When is the residency requirement considered fulfilled under INA 320? My wife, son, and I have been living in the US for the past two years and have various documents in his name, including my apartment rental contract (that states the names of the 3 of us), school records, medical records, and a minor’s bank account. Is this existing evidence valid for applying for a US passport under INA 320 as soon as we receive the Green Card, or does the evidence need to be accumulated after he gets the Green Card? If the latter, how long must we accumulate this new evidence (I assume more than six months from the following year)?